Il 17/04/2013 17:19, Andrew Honig ha scritto: > Freeing the memory in kvm_arch_free_memslot is as good as anywhere > else in KVM. The problem is that this memory is in the user space > process mm. This codepath could be called after the mm is destroyed > in the case of an process exit without closing the fd, which will > result in a panic on vm_munmap when it tries to access the mm.
I think that's not a problem, the KVM file descriptor keeps the mm alive. > There's also the possibility that another process closes the fd and > messing with that processes memory map seems like it's asking for > trouble. You can check that current->mm == kvm->mm and leak the memory if they don't match. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
